Plantronics 88860-01 Wired Headset, Black Smart Sensor technology lets you answer a call by simply putting on the headset One-touch call answer/end, vol +/-, and mute Inline indicator lights and user friendly audio alerts the user to connection, mute and volume status Dynamic EQ automatically adjusts audio settings between voice calls and music PC wideband audio with noise-canceling microphones for high-quality PC telephony